Sodium tartrate crystals
Sodium tartrate crystals
Just a quick session to test my improvised Optiphot + enlarger & camera setup. A work in progress...
Nikon E-plan 10x/0.25, pol, 50 mm enlarger objective used as a relay lens for a M4/3 sensor.
Nikon E-plan 10x/0.25, pol, 50 mm enlarger objective used as a relay lens for a M4/3 sensor.
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- sodiumtatrate_10x_08c.jpg (164.1 KiB) Viewed 3012 times
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Re: Sodium tartrate crystals
Waouh, those pics are gorgeous! Those pics are very "organic" looking, feather like...
What kind of light do you shine on your sample? How do filters change the colors?
What kind of light do you shine on your sample? How do filters change the colors?
Re: Sodium tartrate crystals
Thanks!
What kind of light - eh, 50W halogen.
These are birefringent crystals between polarisation filters, which produces interference colors. The third picture has a 'retardation plate' above the polarizer. Very easy to DIY and cheap as long as it's not for accurate measurements! I think Microbehunter made a video about it.
What kind of light - eh, 50W halogen.
These are birefringent crystals between polarisation filters, which produces interference colors. The third picture has a 'retardation plate' above the polarizer. Very easy to DIY and cheap as long as it's not for accurate measurements! I think Microbehunter made a video about it.
Re: Sodium tartrate crystals
That is so beautiful, thanks for sharing!
The views through the eyepiece must be breathtaking.
The views through the eyepiece must be breathtaking.
Re: Sodium tartrate crystals
Tnx, yes the view is spectacular with those Nikon ultrawide eyepieces!
Very finnicky though. If I look at the periphery, the view becomes black because the pupils move away from the light cone and I have to compensate by moving my head a bit. Is that normal?
Here's another one, an area overlapping the third picture. I even stitched them, so easy! Next session I'll go for a 3x3 stitch.
Very finnicky though. If I look at the periphery, the view becomes black because the pupils move away from the light cone and I have to compensate by moving my head a bit. Is that normal?
Here's another one, an area overlapping the third picture. I even stitched them, so easy! Next session I'll go for a 3x3 stitch.
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Re: Sodium tartrate crystals
Yes I know that the cristals change polarization which lead to interference colors. But aren't those colors part of the original light spectrum? I was just wondering what would happen if one would filter the original light? Would one be able to produce another color palette?Lomonaut wrote: ↑Tue Sep 07, 2021 10:57 pmThanks!
What kind of light - eh, 50W halogen.
These are birefringent crystals between polarisation filters, which produces interference colors. The third picture has a 'retardation plate' above the polarizer. Very easy to DIY and cheap as long as it's not for accurate measurements! I think Microbehunter made a video about it.
Re: Sodium tartrate crystals
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Delightful images, well done. Nice and sharp too!
Delightful images, well done. Nice and sharp too!
Do you have a photo of your setup?Nikon E-plan 10x/0.25, pol, 50 mm enlarger objective used as a relay lens for a M4/3 sensor.
Zeiss Standard WL (somewhat fashion challenged) & Wild M8
Olympus E-P2 (Micro Four Thirds Camera)
Olympus E-P2 (Micro Four Thirds Camera)
Re: Sodium tartrate crystals
Ah, I misunderstood, sorry! Interesting question.smollerthings wrote: ↑Wed Sep 08, 2021 7:53 pmYes I know that the cristals change polarization which lead to interference colors. But aren't those colors part of the original light spectrum? I was just wondering what would happen if one would filter the original light? Would one be able to produce another color palette?
I think you are right, the colors are part of the original light spectrum and the POL effect can not actually change or shift the light frequencies. The spectrum can appear because the light is white. Just to be sure I'll try it out if I can find some filters
Thanks 75RR, the camera was just lying loose on the wobbly enlarger!
Re: Sodium tartrate crystals
Small update... this shot deserves to be here, too!
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Re: Sodium tartrate crystals
Spectacular images. Bravo !
Re: Sodium tartrate crystals
That is very beautiful!